Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfeb6fab563d759e…

MALICIOUS

PDF

79.3 KB Created: 2021-03-15 08:13:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e016261c39ccea012fe6d5ed8d2269bd SHA-1: e8c7314a1fd928e67f5d9be8519e75ec285060f8 SHA-256: bfeb6fab563d759e20ca1698cb9ca0a281e3d67c2c6fc05452fce798aa1cf176
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including ML and ClamAV, as malicious. It contains numerous external URIs and is described as a link farm hosted on disposable domains, indicating a phishing or malware distribution attempt. The presence of embedded URLs suggests an attempt to redirect users to malicious sites, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://xezojetit.ru/award?keyword=markovnikov+rule+pdf PDF link annotation
    • http://moxegelubopidi.sportsontheweb.net/62043887475.pdfIn PDF document text
    • http://jusukigib.sportsontheweb.net/kero_sun_radiant_10_owners_manual.pdfIn PDF document text
    • http://kufafukedexepix.mygamesonline.org/how_to_fix_a_john_deere_riding_lawn_mower.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452834/normal_600b23c0548bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366987/normal_60286347546c9.pdfIn PDF document text
    • http://linodogeb.scienceontheweb.net/automatic_control_engineering_raven_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0046a727-df8f-4da2-9244-bd689549f739/fiwukegikiwibugaxoneted.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/a_first_course_in_differential_equations_with_modeling_applications_11e_11th_edition.pdfIn PDF document text
    • http://dadodoserosif.epizy.com/geometric_figures_worksheet.pdfIn PDF document text
    • http://pivirujifija.epizy.com/manualidades_para_halloween_faciles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8737b787-75cd-4eca-856f-ca7e292f41ee/85291552669.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3535ce42-a875-4563-b37f-bedde13e87f8/what_is_a_community_health_needs_assessment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f4c1f13-261d-4bc5-bfe0-e2f9e2ed3378/is_skim_milk_allowed_on_21_day_fix.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/arlo_pro_2_manual_recording.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/what_are_the_four_stages_of_team_development.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d421ea12-28f0-462d-8fc1-8cedff8ad685/jizek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00acb03e-fed7-40df-91c5-bf08ff46755a/nepefoloninemo.pdfIn PDF document text
    • http://niwudovokev.epizy.com/macbeth_fate_vs_free_will_quotes_act_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ec4f1c2-f2cf-408d-a29f-1daf9da40abb/total_gym_xls.pdfIn PDF document text
    • http://lelofenejoziza.epizy.com/delarikopitolalupiru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a219dff8-f89b-4235-be3d-a1bf8c71833d/37763568479.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28e995bd-6166-4ab3-8353-c2ac3bfbbc88/36965100260.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6AC 4988 bytes
SHA-256: 7923c49e78a2cb01e06ac0b587f23ef4b825c9adbbbde1de2c7da7ca176643b9
font_01_sfnt_off000107ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107CA 12264 bytes
SHA-256: 5219f03b7df9730415605b51b1c1f814848ae1ae5cdd84097f5244563dc00eb9

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